|
|
02-12-2020, 03:37 PM
|
#1
|
Mini-Skoolie
Join Date: Feb 2020
Posts: 18
Year: 1999
Coachwork: Freightliner
Chassis: FS65
Engine: 6 cylinder Cummins
|
Battery wont charge after winter
They are putting out 3 volts but not any real electricity because they cant even flicker the dome lights. Trickle charger won't charge em.
I wrapped them up in an electric blanket and left them charging, but nothing so far.
Think they'll live?
|
|
|
02-12-2020, 03:42 PM
|
#2
|
Bus Geek
Join Date: Dec 2016
Location: Weeki Wachee, FL
Posts: 3,056
Year: 1997
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: Cummins 5.9
Rated Cap: 72
|
A trickle charger might take weeks to bring your battery back up. Your batteries may have been permanently damaged by allowing them to discharge in cold temperatures but I wouldn't base that on the results of a trickle charger. A typical 6A charger will take 33 hours to charge a 200Ah battery to full from empty.
|
|
|
02-12-2020, 05:17 PM
|
#3
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Really should **never** let a lead battery drop below 11V unless during controlled testing, and then only a few minutes.
They've definitely been damaged, only proper load testing can tell how much.
I would just replace.
|
|
|
02-12-2020, 07:26 PM
|
#4
|
Bus Nut
Join Date: Sep 2017
Location: Colorado
Posts: 400
|
You could look for a date on the battery. Batteries usually last for 3-5 years, if it is 3+years old and dead it is most likely toast. If it is only 1 year or so old you can charge it and see if it will hold a charge.
|
|
|
02-12-2020, 11:29 PM
|
#5
|
Mini-Skoolie
Join Date: Feb 2020
Posts: 18
Year: 1999
Coachwork: Freightliner
Chassis: FS65
Engine: 6 cylinder Cummins
|
It's 4 years old. Follow up question; it is a 6 cylinder cummins diesel, would it need 24 volts to start or could I just buy 1 battery?
|
|
|
02-13-2020, 02:26 AM
|
#6
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Replace like with like, have you ever started it successfully?
Can't imagine owning a truck and not knowing that?
Get the owners' manual at least and read it…
|
|
|
02-13-2020, 09:55 AM
|
#7
|
Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
|
Quote:
Originally Posted by ClintThrust
It's 4 years old. Follow up question; it is a 6 cylinder cummins diesel, would it need 24 volts to start or could I just buy 1 battery?
|
The starter is 12 volt. The two 12v batteries are connected in parallel to double the available cranking amps.
You may get away with one battery in warm weather but you are likely to have trouble in cold weather and reduce the lifespan of the battery.
My 6 cylinder Cummins all have two or three group 31 batteries in parallel.
I just replaced a set at BatteriesPlus. I paid a bit over $125 each including tax and environmental fee. If you have a Rural King near you I would check them out. I have heard of them putting Group 31's on sale for well under $100each.
Good luck.
|
|
|
02-13-2020, 09:55 AM
|
#8
|
Mini-Skoolie
Join Date: Feb 2020
Posts: 18
Year: 1999
Coachwork: Freightliner
Chassis: FS65
Engine: 6 cylinder Cummins
|
Yeah its started a bunch but I sure don't daily drive the darn thing.
I only ask because I know we've driven my friends gas bus on 1 car battery, but I don't know if diesels are different.
And I don't have enough money to buy 2 batteries.
|
|
|
02-13-2020, 09:57 AM
|
#9
|
Mini-Skoolie
Join Date: Feb 2020
Posts: 18
Year: 1999
Coachwork: Freightliner
Chassis: FS65
Engine: 6 cylinder Cummins
|
Quote:
Originally Posted by PNW_Steve
The starter is 12 volt. The two 12v batteries are connected in parallel to double the available cranking amps.
You may get away with one battery in warm weather but you are likely to have trouble in cold weather and reduce the lifespan of the battery.
My 6 cylinder Cummins all have two or three group 31 batteries in parallel.
I just replaced a set at BatteriesPlus. I paid a bit over $125 each including tax and environmental fee. If you have a Rural King near you I would check them out. I have heard of them putting Group 31's on sale for well under $100each.
Good luck.
|
Thanks man I'll probably just get 1 for now I've just gotta move it once here.
|
|
|
02-13-2020, 10:04 AM
|
#10
|
Mini-Skoolie
Join Date: Apr 2019
Location: Florida
Posts: 41
Year: 1997
Coachwork: Bluebird
Chassis: Tc2000
|
After the winter i had to replace 1 of my main batteries for this very reason.
Lead acid and agm should never drop.below 50% damage will occur
|
|
|
02-13-2020, 10:05 AM
|
#11
|
Mini-Skoolie
Join Date: Feb 2020
Posts: 18
Year: 1999
Coachwork: Freightliner
Chassis: FS65
Engine: 6 cylinder Cummins
|
UPDATE
so I trickle charged them overnight and wrapped em up in a blanket and gave em a little jump with my car this morning and they're holding 12 volts.
Im sure its pretty bad for them but I'll probably replace them after this move because they shouldn't have died in the first place i reckon.
|
|
|
02-13-2020, 10:55 AM
|
#12
|
Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
|
Do you have a battery disconnect?
Your ECM probably draws a bit of current when the bus is turned off. If you park it for long without disconnecting the batteries you can kill your batteries.
The rig that I just put batteries in had one battery fail and I removed it leaving two group 31's. They lasted for a week or two then died. Of course they never die someplace convenient.......
|
|
|
02-13-2020, 11:03 AM
|
#13
|
Mini-Skoolie
Join Date: Feb 2020
Posts: 18
Year: 1999
Coachwork: Freightliner
Chassis: FS65
Engine: 6 cylinder Cummins
|
Ok I was wondering what might be killing them that makes sense.
It doesn't have a disconnect that'll be the next thing I put in for sure.
|
|
|
02-19-2020, 10:21 PM
|
#14
|
Bus Crazy
Join Date: Feb 2018
Location: Golden Valley AZ
Posts: 1,036
Year: 1993
Chassis: ThomasBuilt 30'
Engine: need someone to tell me
Rated Cap: me + 1
|
Quote:
Originally Posted by ClintThrust
They are putting out 3 volts but not any real electricity because they cant even flicker the dome lights. Trickle charger won't charge em.
I wrapped them up in an electric blanket and left them charging, but nothing so far.
Think they'll live?
|
I know this sounds stupid, but these are common problems...3 volts is really low. Were you reading off of the battery posts or thru the cables?
Did you check the water and clean the connections before trying to charge?
|
|
|
02-19-2020, 10:51 PM
|
#15
|
Bus Nut
Join Date: May 2015
Posts: 271
|
You’ll burn up your starter - just buy new batteries and make sure your wires are solid. Don’t risk it
|
|
|
02-20-2020, 05:34 AM
|
#16
|
Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
|
Quote:
Originally Posted by ClintThrust
Ok I was wondering what might be killing them that makes sense.
It doesn't have a disconnect that'll be the next thing I put in for sure.
|
Mine is currently broken. Fortunately it failed in the ON position. Until I get around to replacing it I disconnect the battery cable when parking for extended periods of time.
|
|
|
02-20-2020, 08:20 AM
|
#17
|
Bus Crazy
Join Date: Oct 2015
Location: Spring Valley AZ
Posts: 1,343
Year: 2000
Coachwork: Bluebird
Engine: 5.9 Cummins
Rated Cap: 2 elderly children, 1 cat
|
Just bought a new 8d for 2K4S. Been running with 1 for about 4 years but resting volts was 10.4. $186 at Batteries + and we're at 12.8. Starts instantly.
It does get into the 20's here often.
__________________
Don, Mary and Spooky the cat.
|
|
|
02-20-2020, 08:41 AM
|
#18
|
Bus Geek
Join Date: Dec 2016
Location: Weeki Wachee, FL
Posts: 3,056
Year: 1997
Coachwork: Bluebird
Chassis: TC2000 FE
Engine: Cummins 5.9
Rated Cap: 72
|
The deadly combination is cold + low voltage. if you keep them full, they can get absurdly cold without damage. They won't work as well while cold of course, but they'll recover from it.
If your batteries are discharged, the freezing point climbs quickly and damage happens.
|
|
|
02-20-2020, 12:23 PM
|
#19
|
Bus Geek
Join Date: Nov 2016
Posts: 2,775
|
Letting a lead batt sit at anything but 100% Full will murder it even more quickly in hot ambients.
Time spent at all discharged should be a tiny fraction of 1% of its lifetime.
|
|
|
02-20-2020, 03:07 PM
|
#20
|
Bus Crazy
Join Date: Feb 2018
Location: Golden Valley AZ
Posts: 1,036
Year: 1993
Chassis: ThomasBuilt 30'
Engine: need someone to tell me
Rated Cap: me + 1
|
Quote:
Originally Posted by brokedown
The deadly combination is cold + low voltage. if you keep them full, they can get absurdly cold without damage. They won't work as well while cold of course, but they'll recover from it.
If your batteries are discharged, the freezing point climbs quickly and damage happens.
|
What does the blue line and the numbers beside it represent? The freezing point of the battery electrolyte and the actual temp where it crosses the SOC lines?
|
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|